Running for about 32 miles (51 km) in a general north-south direction, connecting rural portions of DeKalb and Steuben counties.

The route enters Garrett, concurrent with Randolph Street, and passes through a mix of commercial and residential properties.

North of the railroad tracks the route leaves the historic district, while passes through residential properties.

North of Garrett the road makes a sharp curve turning due west.

South of Helmer the road bends towards the west before curving towards the north and having an intersection with the western terminus of the eastern segment of SR 4.

While the SR 327 designation end at the state line the roadway continues north into Michigan as Rierson Road.

This measurement is a calculation of the traffic level along a segment of roadway for any average day of the year.

Between 2014 and 2015, INDOT figured that lowest traffic levels were 748 vehicles used the highway daily between Indiana Toll Road and Michigan state line.